Method and apparatus for transmitting/receiving broadcasting signal including robust header compression packet stream and fast information

Abstract

A method for transmitting a broadcast signal includes generating a packet carrying a broadcast service and service signaling information, and a packet carrying fast information for supporting rapid service scans and service acquisition, the fast information including identification information for identifying the broadcast service, service category information representing a category of the broadcast service and hidden information representing whether or not the broadcast service is related to a test service; generating a robust header compression (RoHC) packet by compressing a header of each packet, and signaling information including context information generated from the compressing the header of each packet; and transmitting a signal frame including the RoHC packet and the signaling information.

What is claimed is: 
     
       1. A method for transmitting a broadcast signal, the method comprising:
 generating a packet carrying a broadcast service and service signaling information, and a packet carrying fast information for supporting rapid service scans and service acquisition, 
 the fast information including identification information for identifying the broadcast service, service category information representing a category of the broadcast service and hidden information representing whether or not the broadcast service is related to a test service; 
 generating a robust header compression (RoHC) packet by compressing a header of each packet, and signaling information including context information generated from the compressing the header of each packet; and 
 transmitting a signal frame including the RoHC packet and the signaling information, the signaling information is transmitted separately from the RoHC packet, the signaling information including: 
 context identification information for representing a context identification (ID) for the RoHC packet, 
 context profile information for a range which is used for compressing a packet stream including the packets, 
 maximum context identification information indicating a maximum value of the context ID, and 
 configuration information for a configuration for the context information. 
 
     
     
       2. The method of  claim 1 , wherein the signaling information includes large context identification information indicating a representation format of the context identification information. 
     
     
       3. The method of  claim 2 , wherein the signaling information includes at least one of feedback channel information indicating whether a backward channel for transmission of feedback information is present in a channel for transmission of the RoHC packet and maximum segment size information indicating a maximum size of one segment when the RoHC packet is segmented to one or more segments. 
     
     
       4. The method of  claim 1 , wherein the signaling information includes type information indicating a type of signaling carried in the signaling information. 
     
     
       5. The method of  claim 1 , wherein the fast information further includes information indicating whether one or more components of the broadcast service are protected, and information identifying a broadcast stream including the broadcast service. 
     
     
       6. A method for receiving a broadcast signal, the method comprising:
 receiving a signal frame including a robust header compression (RoHC) packet and signaling information including context information generated by compressing a header of each packet, the signaling information is carried separately from the RoHC packet, 
 wherein the RoHC packet is generated by compressing the header of each packet, 
 a packet carrying a broadcast service and service signaling information for the broadcast service, and a packet carrying fast information for supporting rapid service scans and service acquisition, 
 the fast information including identification information for identifying the broadcast service, service category information representing a category of the broadcast service and hidden information representing whether or not the broadcast service is related to a test service, and 
 the signaling information including context identification information for representing a context identification (ID) for the RoHC packet, 
 context profile information for a range which is used for compressing a packet stream including the packets, 
 maximum context identification information indicating a maximum value of the context ID, and 
 configuration information for a configuration for the context information; 
 decompressing the RoHC packet to restore the IP packet stream based on the signaling information; 
 parsing the fast information in the packet; 
 parsing the service signaling information in the packet; and 
 decoding the broadcast service in the packet. 
 
     
     
       7. The method of  claim 6 , wherein the signaling information includes large context identification information indicating a representation format of the context identification information. 
     
     
       8. The method of  claim 7 , wherein the signaling information includes at least one of feedback channel information indicating whether a backward channel for transmission of feedback information is present in a channel for transmission of the RoHC packet and maximum segment size information indicating a maximum size of one segment when the RoHC packet is segmented to one or more segments. 
     
     
       9. The method of  claim 6 , wherein the signaling information includes type information indicating a type of signaling carried in the signaling information. 
     
     
       10. The method of  claim 6 , wherein the fast information further includes information indicating whether one or more components of the broadcast service are protected, and information identifying a broadcast stream including the broadcast service. 
     
     
       11. An apparatus for transmitting a broadcast signal, the apparatus comprising:
 a packet generator configured to generate a packet carrying a broadcast service and service signaling information, and a packet carrying fast information for supporting rapid service scans and service acquisition, 
 the fast information including identification information for identifying the broadcast service, service category information representing a category of the broadcast service and hidden information representing whether or not the broadcast service is related to a test service; 
 a robust header compression (RoHC) compressor configured to generate a RoHC packet by compressing a header of each packet, and signaling information including context information generated from the compressing the header of each packet; 
 a transmitter configured to transmit a signal frame including the RoHC packet and the signaling information, the signaling information is transmitted separately from the RoHC packet, 
 the signaling information including context identification information for representing a context identification (ID) for the RoHC packet, 
 context profile information for a range which is used for compressing a packet stream including the packets, and 
 maximum context identification information indicating a maximum value of the context ID, and 
 configuration information for a configuration for the context information. 
 
     
     
       12. An apparatus for receiving a broadcast signal, the apparatus comprising:
 a receiver configured to receive a signal frame including a robust header compression (RoHC) packet and signaling information including context information generated by compressing a header of each packet the signaling information is carried separately from the RoHC packet, 
 wherein the RoHC packet is generated by compressing the header of each packet, 
 a packet carrying a broadcast service and service signaling information for the broadcast service, and a packet carrying fast information for supporting rapid service scans and service acquisition, 
 the fast information including identification information for identifying the broadcast service, service category information representing a category of the broadcast service and hidden information representing whether or not the broadcast service is related to a test service, and 
 the signaling information including context identification information for indicating a context identification (ID) for the RoHC packet, 
 context profile information for a range which is used for compressing a packet stream including the packets, 
 maximum context identification information indicating a maximum value of the context ID, and 
 configuration information for a configuration for the context information; 
 a RoHC decompressor configured to decompress the RoHC packet stream to restore the IP packet stream based on the signaling information; 
 a signaling parser configured to parse the fast information in the packet, 
 wherein the signaling parser further parses the service signaling information in the packet; and 
 a decoder configured to decode the broadcast service in the packet.